NetBSD Problem Report #46565

From www@NetBSD.org  Fri Jun  8 16:48:05 2012
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Date: Fri,  8 Jun 2012 16:48:04 +0000 (UTC)
From: jdbaker@mylinuxisp.com
Reply-To: jdbaker@mylinuxisp.com
To: gnats-bugs@NetBSD.org
Subject: emulators/qemu (qemu-1.1.0) dumps core on NetBSD-5.1_STABLE/i386
X-Send-Pr-Version: www-1.0


>Number:         46565
>Category:       pkg
>Synopsis:       emulators/qemu (qemu-1.1.0) dumps core on NetBSD-5.1_STABLE/i386
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    pkg-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Jun 08 16:50:01 +0000 2012
>Last-Modified:  Thu Sep 27 13:00:04 +0000 2012
>Originator:     John D. Baker
>Release:        NetBSD-5.1_STABLE/i386, pkgsrc-2012Q1 (w/some updated to -HEAD)
>Organization:
>Environment:
NetBSD slate.technoskunk.fur 5.1_STABLE NetBSD 5.1_STABLE (SLATE) #2: Sun Jun  3 21:44:59 CDT 2012  sysop@slate.technoskunk.fur:/d0/build/netbsd-5/obj/i386/sys/arch/i386/compile/SLATE i386


>Description:
Following the update of emulators/qemu to 1.1.0 (shadowing wip/qemu),
I updated that package to -HEAD in my pkgsrc tree (is otherwise -2012Q1)
and built.


Attempting to run:


  $ qemu-system-i386 -cdrom /d0/build/netbsd-5/REL/iso/i386cd.iso wd0


Resulted in:


  Memory fault (core dumped)


Loading everything into gdb reveals:


Core was generated by `qemu-system-i386'.
Program terminated with signal 11, Segmentation fault.
#0  0xbba898dc in pthread_curcpu_np () from /usr/lib/libpthread.so.0
(gdb) bt
#0  0xbba898dc in pthread_curcpu_np () from /usr/lib/libpthread.so.0
#1  0xbb8f7478 in posix_memalign () from /usr/lib/libc.so.12
#2  0xbb8f7a83 in malloc () from /usr/lib/libc.so.12
#3  0xbbb56e29 in g_mem_set_vtable () from /usr/pkg/lib/libglib-2.0.so.0
#4  0xbbb57242 in g_malloc0 () from /usr/pkg/lib/libglib-2.0.so.0
#5  0x080945ce in ?? ()
#6  0x00000054 in ?? ()
#7  0x00000000 in ?? ()




The same result is had from 'qemu-system-sparc'.  I haven't tried any
other targets.
>How-To-Repeat:
Update emulators/qemu to -HEAD.  Build and install on
NetBSD-5.1_STABLE/i386 (other host arches? other sub-branches of
netbsd-5?).


(Was last observed to build and run fine on NetBSD-6.0_BETA2/i386.)
>Fix:


>Audit-Trail:
From: Peter Bex <Peter.Bex@xs4all.nl>
To: gnats-bugs@netbsd.org
Cc: 
Subject: Re: pkg/46565
Date: Thu, 14 Jun 2012 22:21:10 +0200


 Just an additional data point, it also segfaults on a NetBSD/amd64 6.0_BETA
 kernel with 5.1 userland.  The trace below happens when trying to load an
 Anyboot image with qemu-i386 (though I think I used it wrong; the working
 version just gives an error message):

 
 Program received signal SIGSEGV, Segmentation fault.
 0x00007f7ff666ac1a in __sigtimedwait () from /usr/lib/libc.so.12
 (gdb) bt
 #0  0x00007f7ff666ac1a in __sigtimedwait () from /usr/lib/libc.so.12
 #1  0x00007f7ff663580d in sigtimedwait () from /usr/lib/libc.so.12
 #2  0x00007f7ff7006365 in sigtimedwait () from /usr/lib/libpthread.so.0
 #3  0x00007f7ff66357a3 in sigwait () from /usr/lib/libc.so.12
 #4  0x000000000044ad23 in ?? ()
 #5  0x00007f7ff700bd92 in pthread_setcancelstate () from /usr/lib/libpthread.so.0
 #6  0x00007f7ff66545b0 in swapcontext () from /usr/lib/libc.so.12
 Cannot access memory at address 0x7f7ff0000000

 
 I talked to ASau on IRC and he mentioned it also crashed for him on
 NetBSD/i386 6.0_BETA

 
 As a workaround, he suggested using emulators/qemu0

 
From: Andreas Gustafsson <gson@gson.org>
To: gnats-bugs@netbsd.org
Cc: 
Subject: Re: pkg/46565: emulators/qemu (qemu-1.1.0) dumps core on NetBSD-5.1_STABLE/i386
Date: Thu, 27 Sep 2012 15:59:38 +0300


 To offer a couple of additional data points, the problem is also
 present in qemu 1.2.0nb1 on NetBSD 5.1_STABLE/amd64.  It does not
 affect qemu 1.2.0nb1 on NetBSD 6.0_RC2/amd64, nor qemu-0.15.1nb5 on
 NetBSD 5.1_STABLE/amd64.
 -- 
 Andreas Gustafsson, gson@gson.org

 

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